A Spray-Processable, Low Bandgap, and Ambipolar Donor−Acceptor Conjugated Polymer
- 6 February 2009
- journal article
- research article
- Published by American Chemical Society (ACS) in Journal of the American Chemical Society
- Vol. 131 (8), 2824-2826
- https://doi.org/10.1021/ja809372u
Abstract
Combining a strong donor, tris(dodecyloxy)phenyl)-dithieno[3,2-b:2′,3′-d]pyrrole, with a strong acceptor, 4,8-dithien-2-yl-2λ4δ2-benzo[1,2-c;4,5-c′]bis[1,2,5]thiadiazole, has yielded the lowest bandgap, soluble, spray-processable polymer to date. The polymer has access to four different redox states and shows ambipolar behavior in OFETs. Multiple techniques, including transmission/absorption spectroscopy on SWCNTs and reflectance spectroscopy on gold were used to accurately estimate the optical bandgap at 0.5−0.6 eV, which correlates well to theoretical calculations.Keywords
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